   body {
            font-family: 'Arial', sans-serif;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            height: 100vh;
            background-color: #f5f5f5;
            user-select: none;
        }
        
        .header {
            background-color: #333;
            color: white;
            padding: 0px 0px;
            text-align: center;
        }
        
        .container {
            display: flex;
            flex: 1;
            overflow: hidden;
        }
        
        .sidebar {
            width: 300px;
            background-color: #444;
            color: white;
            overflow-y: auto;
            padding: 10px;
        }
        
        .main-content {
            flex: 1;
            display: flex;
            flex-direction: column;
            overflow: hidden;
            background-color: #fff;
        }
        
        .player-controls {
            padding: 15px;
            background-color: #333;
            color: white;
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        
        .progress-container {
            width: 100%;
            margin: 10px 0;
        }
        
        progress {
            width: 100%;
            height: 10px;
            border-radius: 5px;
        }
        
        .time-display {
            display: flex;
            justify-content: space-between;
            width: 100%;
            font-size: 12px;
        }
        
        .controls {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-top: 0px;
        }
        
        button {
            background-color: #4CAF50;
            border: none;
            color: white;
            padding: 8px 15px;
            border-radius: 4px;
            cursor: pointer;
        }
        
        button:hover {
            background-color: #45a049;
        }
        
        .volume-control {
            display: flex;
            align-items: center;
            gap: 5px;
        }
        
        .song-list {
            list-style-type: none;
            padding: 0;
            margin: 0;
        }
        
        .song-item {
            padding: 10px;
            cursor: pointer;
            border-bottom: 1px solid #555;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis; 
        }
        
        .song-item:hover {
            background-color: #555;
        }
        
        .song-item.active {
            background-color: #4CAF50;
        }
        
        .lyrics-container {
            flex: 1;
            overflow-y: auto;
            padding: 20px;
            line-height: 2;
            font-size: 16px;
            user-select: none;
        }
        
        .lyric-line {
            margin-bottom: 10px;
            cursor: pointer;
            transition: all 0.2s;
            opacity: 0.6;
            white-space: pre-line;
            font-size: 24px;
        }
        
        .lyric-line.active {
            font-weight: bold;  
            font-size: 26px;
            color: #4CAF50;
            opacity: 1;
            white-space: pre-line;
        }
        
        .file-selector {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            height: 100%;
            text-align: center;
        }
        
        .file-selector button {
            padding: 15px 30px;
            font-size: 16px;
            width: 15%;
        }
        
        .now-playing {
            margin-bottom: 10px;
            font-weight: bold;
            text-align: center;
        }
        
        input[type="range"] {
            width: 100px;
        }